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High-rigidity trailer arm

A high-rigidity, trailer-based technology, which is applied in the field of trailer arms and high-rigidity trailer arms, can solve the problems of loose assembly of bolts and nuts, shortened service life, and decreased matching performance, achieving high loose packing density, reduced resistance, Effect of Consistency Increase

Inactive Publication Date: 2018-04-27
NINGBO YINZHOU LONGTENG TOOL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when the problem is caused, the detachable tow ball has a rotation phenomenon during use. When the tow ball and the flat iron frequently rotate, it will lead to a decrease in the matching performance between the two, thread damage, bolts and The nut assembly is loose, causing safety hazards and shortening the service life

Method used

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  • High-rigidity trailer arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Premixing: Dry mixing of Cu, Fe and stearic acid with a mass of 0.7% of the alloy steel quality in the alloy steel raw materials to obtain premixed steel powder; wherein, the alloy steel includes the following components in mass percentages: C: 0.82%, Si : 0.17%, Mn: 0.32%, Cr: 1.12%, Co: 0.26%, Mo: 0.32%, Cu: 0.15%, cellulose: 1.15%, S: 0.01%, P: 0.02%, the balance is Fe;

[0029] Ball milling: the remaining components of the alloy steel and the pre-mixed steel powder are placed on a planetary ball mill for mechanical alloying; the ball-to-material ratio of the ball milling process is 23:1, the ball milling time is 50h, and the ball mill rotation speed is 230r / min. Every 0.5h from switch to once;

[0030] Hydrogen annealing: the ball-milled powder is annealed with hydrogen in a sintering furnace at a temperature of 400°C for 3 hours;

[0031] Compression molding: Press the annealed powder on a compression molding machine with a pressure of 600MPa and add Zr 56 co 22...

Embodiment 2

[0036] Premixing: dry mixing Cu, Fe and stearic acid with a mass of 0.72% of the alloy steel quality in the alloy steel raw materials to obtain premixed steel powder; wherein, the alloy steel includes the following components in mass percentages: C: 0.85%, Si : 0.19%, Mn: 0.38%, Cr: 1.15%, Co: 0.27%, Mo: 0.36%, Cu: 0.17%, cellulose: 1.17%, S: 0.01%, P: 0.015%, the balance is Fe;

[0037] Ball milling: the remaining components of the alloy steel and the premixed steel powder are placed on a planetary ball mill for mechanical alloying; the ball-to-material ratio of the ball milling process is 23.5:1, the ball milling time is 51 hours, and the ball mill rotation speed is 235r / min. Every 0.55h from switching to once;

[0038] Hydrogen annealing: the ball-milled powder is annealed with hydrogen in a sintering furnace at a temperature of 405°C for 3.1 hours;

[0039] Compression molding: Press the annealed powder on a compression molding machine with a pressure of 610MPa and add Zr...

Embodiment 3

[0044] Premixing: Dry mixing of Cu, Fe and stearic acid with a mass of 0.758% of the alloy steel quality in the alloy steel raw materials to obtain premixed steel powder; wherein, the alloy steel includes the following components in mass percentages: C: 0.9%, Si : 0.23%, Mn: 0.36%, Cr: 1.18%, Co: 0.29%, Mo: 0.4%, Cu: 0.2%, cellulose: 1.2%, S: 0.02%, P: 0.021%, and the balance is Fe;

[0045] Ball milling: the remaining components of alloy steel and premixed steel powder are placed on a planetary ball mill for mechanical alloying; the ball-to-material ratio of the ball milling process is 24:1, the ball milling time is 53h, and the ball mill rotation speed is 240r / min. Every 0.65h from switch to once;

[0046] Hydrogen annealing: the ball-milled powder is annealed with hydrogen in a sintering furnace at a temperature of 410°C for 3.3 hours;

[0047] Compression molding: Compress the annealed powder on a compression molding machine with a pressure of 600-650MPa and add Zr 56 co...

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Abstract

The invention relates to a trailer arm, in particular to a high-rigidity trailer arm and belongs to the field of mechanical materials. The high-rigidity trailer arm comprises a main body made of alloysteel and a PTFE-Al2O3 layer coating the surface of the alloy steel, the PTFE-Al2O3 layer is prepared by an anodic oxidation process, and the electrolyte of the anodic oxidation process comprises thefollowing components of 200-210 g / l of H2SO4, 20-22 g / l of oxalic acid, 10-12 g / l of amino sulfonic acid, 3-5 g / l of aluminum sulfate, 0.1-0.2 g / l of a surfactant, and 25-27 ml / l of polytetrafluoroethylene concentrated dispersion liquid. According to the high-rigidity trailer arm, the alloy steel with reasonable compatibility is adopted, a specific preparation method is also adopted, so that theobtained trailer arm has the advantages of being high in rigidity and elongation.

Description

field of invention [0001] The invention relates to a trailer arm, in particular to a high-rigidity trailer arm, which belongs to the field of mechanical materials. Background technique [0002] The trailer arm is used to connect the towing vehicle to the towed vehicle. Due to the different size of the dome cover of different vehicles, the tow arm is often designed so that the tow ball is detachable, so that it is easy to replace the tow ball with different specifications during use. At the same time, when the problem is caused, the detachable tow ball has a rotation phenomenon during use. When the tow ball and the flat iron frequently rotate, it will lead to a decrease in the matching performance between the two, thread damage, bolts and The assembly of the nut is loose, causing potential safety hazards and shortening the service life. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention proposes a trailer arm ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/34C22C38/02C22C38/04C22C38/22C22C38/30C22C38/20C22C33/02C21D7/06B62K27/00B22F1/00B22F9/04
CPCC21D7/06C22C33/0264C22C38/02C22C38/04C22C38/20C22C38/22C22C38/30C25D11/34B62K27/003B22F9/04B22F2009/041B22F2009/043B22F2998/10B22F2999/00B22F1/10B22F3/1007B22F2201/20B22F1/142B22F2201/013B22F3/02B22F3/24B22F2003/242
Inventor 李光龙
Owner NINGBO YINZHOU LONGTENG TOOL FACTORY